Finding the Fourth Proportional to 45,338,381.76, 68,007,232.92 and 12,990,311.40
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Solution
The fourth proportional to 45,338,381.76, 68,007,232.92 and 12,990,311.40 is: 19,485,369.76
Step by Step Solution
- Step 1: Write the proportion equation
45,338,381.76 : 68,007,232.92 = 12,990,311.40 : x - Step 2: Convert to fraction form
45,338,381.76/68,007,232.92 = 12,990,311.40/x - Step 3: Cross multiply
45,338,381.76x = 68,007,232.92 × 12,990,311.40 - Step 4: Simplify right side
45,338,381.76x = 883,435,133,083,131.38 - Step 5: Solve for x
x = 883,435,133,083,131.38/45,338,381.76 - Step 6: Final answer
x = 19,485,369.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.